Study on Evolution Characteristics of Stress Field of Stepped Fault
DOI:
https://doi.org/10.54097/ije.v3i3.002Keywords:
Step Fault, Ground Stress, Stress Concentration, Evolutionary Characteristics, Flac3D Numerical SimulationAbstract
With the development of mining to the deep, the ground stress increases correspondingly, and the geological conditions become more and more complicated. Mine dynamic disasters mainly occur near faults. Numerous studies have been conducted on single faults, but few studies have been done on stepped faults formed by double faults under complex geological conditions. Based on this, with the 3110-working face of Zhong Tai Mining in He bi as the engineering background, Single fault model a and different step fault models b, c, d, e and f were established by Flac3D numerical simulation software. The characteristics of stress field evolution of single fault and step fault under the influence of deep mining are studied. The results show that the stress distribution in the upper wall of the fault forms a stress concentration zone, and in the lower wall forms a stress weakening zone. Under the influence of excavation disturbance, the vertical fault distance and the horizontal distance between faults will affect the stress evolution characteristics of the stepped fault.
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References
Tong qing Chen. Research on Three-dimensional Stress Evolution Characteristics of Mining Coal and Rock and Its Influence on Rock Burst [D]. China University of Mining and Technology, 2021.
He ping Xie,Feng Gao,Yang Ju, et al. Quantitative definition and investigation of deep mining [J]. Journal of China Coal Society, 2015, 40(01): 1-10.
Wen ke Zhang,Gang Yang,Zhi qiang Li. Study on fault activation induced shock mechanism under the influence of mining[J]. Energy Technology and Management, 2023, 48(01): 61-64.
Zhan shuo Wang. Experimental study on fault activation conducting water inrush [D]. China University of Mining and Technology, 2022.
Lin ming Dou, Xin yuan Tian, An ye Cao, et al. Present situation and problems of coal mine rock burst prevention and control in China [J]. Journal of China Coal Society, 2022, 47(01): 152-171.
Chuan zhi Jia. Control effect of structure on rock burst[J]. Heilongjiang Science and Technology Information, 2017, (12): 87.
Liang Yuan. Research progress on risk identification assessment monitoring and early warming technologies of typical dynamic hazards in coal mines [J]. Journal of China Coal Society, 2020, 45(05): 1557-1566.
Liang Yuan. Research progress of mining response and disaster prevention and control in deep coal mines [J]. Journal of China Coal Society, 2021, 46(03): 716-725.
Ran Bao,Kai Li. Simulation Study on Effect of Fault Throw on Activation of lnverse Fault[J]. Safety in Coal Mines, 2017, 48 (05): 46-48.
Jia lin Shi,Qian ting Hu,Yong jiang Luo, et al. Study on evolution law of fault stress field in coal measures at different fault dips [J]. Mining Safety & Environmental Protection, 2023, 50(01): 1-8.
Qing xin Qi,Yi shan Pan,Hai tao Li, et al. Theoretical basis and key technology of prevention and control of coal-rock dynamic disasters in deep coal mining [J]. Journal of China Coal Society, 2020, 45(05): 1567-1584.
Chen Zhang,Rong rong Cao,Kun Jia. Mining Stress Distribution Characteristics of Different Fault Dip Angles under Influence of Fault Superposition [J]. Coal Technology, 2022, 41(09): 71-74.
Quan sen Wu,Li shuai Jiang,Peng Kong, et al. Effects characteristics of fault pillar and its dip angle on mining-induced stress and energy distribution[J]. Journal of Mining & Safety Engineering, 2018, 35(04): 708-716.
Zhen hua Jiao,Yao dong Jiang,Yi xin Zhao, et al. Study of dynamic mechanical response characteristics of working face passing through reverse fault [J]. Journal of China University of Mining & Technology, 2019, 48(01): 54-63.
Hong wei Wang,Qing Wang,Rui ming Shi, et al. A review on the interaction mechanism between coal bursts and fault structure instability from the perspective of multi-physical field[J]. Journal of China Coal Society, 2022, 47(02): 762-790.
Jin quan Jiang,Quan lin Wu,Hua Qu. Evolutionary characteristics of mining stress near the hard-thick overburden normal faults [J]. Journal of Mining & Safety Engineering, 2014, 31(06): 881-887.
Xue bin Wang,Zhang sheng Guo,Chao qun Deng. Numerical modeling of fault barrier effects on three kinds of stresses: a case of footwall mining on the normal fault [J]. Progress in Geophysics, 2020, 35(04): 1605-1611.
Shuang yong Dong,Wen zhou Li. Influence analysis of principal stress deflection on fault stability based on theory of internal and external stress fields [J]. Safety in Coal Mines, 2021, 52(01): 213-219.
Qiu ge Yu,Hua xing Zhang,Yu jun Zhang, et al. Analysis of fault activation mechanism and influencing factors caused by mining [J]. Journal of China Coal Society, 2019, 44(S1): 18-30.
Guang li Zhu,Wen quan Zhang,Gui bin Zhang, et al. Experimental study on fault activation conducting water inrush [J]. Rock and Soil Mechanics, 2017, 38(11): 3163-3172.
Renliang Shan, Liu Dong, Wang Hailong, et al. Study of the fracture instability and fault slip risk of overlying strata during mining near faults[J]. Bulletin of Engineering Geology and the Environment, 2023, 82(3): 82-94.